Toaster Most of us clean a toaster by holding it upside-down and giving it a good shake, but it needs a little more care than that.\u00a0 Unplug your toaster, then shake out any crumbs to start. Wash the crumb tray with a warm water and dish soap. Then wipe down the inside with an old toothbrush or cloth dampened with white vinegar. Finally, rinse it by wiping it down with a damp, clean cloth. Here are some more tips for cleaning your toaster.